Taylor Momsen is opening up about her shocking exit from Gossip Girl! Fans will recall the singer/actress played Jenny Humphrey on the popular teen drama, starting in 2007. However, she stunned fans when she left suddenly in the middle of Season 4 back in 2010. Instead of another TV show or film, she switched to her new role as a rock star, becoming lead singer of The Pretty Reckless. She found a lot of success - and her happiness! Related: Dance Moms Alum Nia Sioux Accuses Abby Lee Miller Of Racism But this wasn't a "god closes a door" situation.